Custom View finding zero results

Currently in trial period for zoho support (helpdesk product).

I have two email addresses forwarding into one sales dept.
I expected to be able to filter by the email address the request was originally sent to.
When I view a request sent to the email address I want to filter on, the request clearly shows that it was in fact sent to the email address I want to filter on.

But when I set up a custom view with criteria of "To Address" contains (or is equal to) the address I see in dozens of requests, the view returns "No requests found".

Any hints as to what I'm doing wrong, or should try.... are appreciated.

I've already used contact form to get help from zoho.